<div class="user_center_nav">
    <div class="h3br">
        <img src="<{if $user.logo==""}><{$user_logo}>1.png<{else}><{$user_logo}><{$user.logo}><{/if}>" alt=""/>
        <h3><{$user.username}></h3>
    </div>
    <ul>
        <li><a class="user_intro" href="user_center.php">基本信息</a></li>
        <li><a class="user_set" href="user_setting.php">账号设置</a></li>
        <li><a class="user_msg" href="user_msg.php">客户留言</a></li>
    </ul>
</div>